Operating Activity; Servicing - Drazice OKC 250 NTR Operation And Installation Manual

4.

OPERATING ACTIVITY

Service water heating via thermal energy through heat exchanger
Closing valves of the heat exchanger must be opened which ensures heating water flow from the hot water heating
system.
Together with the closing valve, it is recommended to install an air outlet valve at the inlet to the heat exchanger in order
to bleed the heat exchanger (Fig. 1) as needed, in particular before the beginning of the heating season.
The time of heating using the heat exchanger depends on the temperature and flow of water in the hot water heating
system. Combined heater is made in universal design – depending on the need of connecting the closing valves to the
heating element from the right or left (Fig.1).
5.

SERVICING

Service devices of heaters of 80 to 250 l capacity are located under the transparent guard of the control panel.
PANEL OF OKC NTR / Z & OKCV NTR HEATERS of 80 up to 200 l capacity
Thermostat knob
PANEL OF OKC NTR,R & OKC NTR / HV HEATERS of 100 up to 250 l capacity
Temperature setting
Teplota vody se nastavuje otočením knoflíku termostatu. Požadovaný symbol se nastaví proti pevnému bodu na
ovládacím panelu.
Lower temperature range
limit (about 5°C)
Fixed point on the control
panel
Anti-freezing temperature
(about 8°C)
Notice: Adjusting the thermostat selector to the left backstop does not mean permanent shutoff of the heating element.
Electric circuit closing indicator lamp Tipping transparent guard
5
Upper temperature range
limit (about 74°C)
"Ideal" temperature (about
60°C)